Non-Healing Pressure Injury With Poor Intake and Hyperglycemia

I would prioritize factors that are both modifiable and strongly linked to wound healing. First, inadequate energy and protein intake: he eats two small meals and has low appetite, so he is unlikely to meet the 1.25-1.5 g/kg/day protein needed for pressure injury healing. Second, uncontrolled hyperglycemia with HbA1c 9.1%; elevated glucose impairs neutrophil function, collagen synthesis, and angiogenesis. Third, pressure and shear: he has no pressure-relieving mattress and sits most of the day, so the wound is being repeatedly injured. Fourth, inflammation and possible micronutrient insufficiency: CRP 18 mg/L suggests ongoing inflammation, and poor intake raises concern for vitamin C, zinc, and vitamin D deficiency. Albumin 2.9 g/dL is a marker of inflammation and illness, not a specific nutrition test.

Smoking history is a remote risk factor but less important now that he has quit. Peripheral arterial disease may limit perfusion, so vascular assessment is needed. The judgment is that nutrition alone will not heal this wound if pressure is not offloaded and glucose is not controlled; conversely, offloading alone will not heal a wound in a patient with inadequate protein and energy intake. I would frame the plan as a bundle: nutrition, glycemic control, pressure redistribution, and local wound care.

Using 30-35 kcal/kg/day, his energy target is about 2,040-2,380 kcal/day. Protein at 1.25-1.5 g/kg/day is about 85-102 g/day. Because his intake is poor and he lives alone, I would recommend high-protein oral nutrition supplements twice daily, each providing about 20-30 g protein and 300-400 kcal, plus home-delivered meals or a grocery service. A specialized oral nutrition supplement containing arginine, glutamine, and beta-hydroxy-beta-methylbutyrate may be considered for a malnourished patient with a pressure injury, but it should not replace adequate total protein and energy; evidence is modest and not universal. I would ensure vitamin C 250-500 mg/day and zinc 15-30 mg/day for a limited period if intake is poor or deficiency is suspected, but I would not use long-term high-dose zinc, which can interfere with copper metabolism.

I would avoid routine high-dose antioxidants, expensive collagen powders, and unproven 'wound healing' blends. Hydration should be adequate, roughly 30 mL/kg/day unless contraindicated. The key judgment is that total energy and protein are the foundation; micronutrients correct deficiencies but do not compensate for inadequate macronutrients. I would also coordinate with the diabetes team to improve glycemic control, because no supplement will overcome HbA1c 9.1%.

I would monitor weekly weight, a 3-day food and supplement intake record, and wound measurements including area, depth, exudate, and signs of infection. I would review glucose logs and coordinate with the diabetes team to intensify insulin or adjust metformin as appropriate, targeting reasonable glycemic control without causing hypoglycemia. I would recheck HbA1c at 3 months and monitor albumin and CRP as trends, not as isolated diagnostic tests. If the wound does not improve by 4 weeks despite adequate intake and offloading, I would reassess for arterial insufficiency, infection, or osteomyelitis.

Multidisciplinary actions include a pressure-relieving mattress and a seating plan with scheduled repositioning, physical therapy for mobility, home-delivered meals or a food prescription, and a follow-up dietitian visit in 2 weeks. I would involve the wound care nurse and vascular surgery if perfusion is inadequate. Smoking cessation should be reinforced, though he has already quit. I would set a clear 4-week review with the patient: if intake is still below 75% of estimated needs, consider more aggressive nutrition support. The judgment is that wound healing is a team outcome; nutrition is necessary but not sufficient without offloading, perfusion, and glycemic control.